From 19836622167b77c7555cbe440bb8631ee3b149ad Mon Sep 17 00:00:00 2001
From: yequari <yequari@32bit.cafe>
Date: Mon, 26 May 2025 00:57:01 -0700
Subject: [PATCH] unit test scaffolding

---
 cmd/web/handlers.go                |  4 +++
 cmd/web/handlers_guestbook_test.go | 19 ++++++++++++
 cmd/web/routes.go                  |  2 ++
 cmd/web/testutils_test.go          | 50 ++++++++++++++++++++++++++++++
 4 files changed, 75 insertions(+)
 create mode 100644 cmd/web/handlers_guestbook_test.go
 create mode 100644 cmd/web/testutils_test.go

diff --git a/cmd/web/handlers.go b/cmd/web/handlers.go
index 9534a56..a72a3b4 100644
--- a/cmd/web/handlers.go
+++ b/cmd/web/handlers.go
@@ -17,3 +17,7 @@ func (app *application) home(w http.ResponseWriter, r *http.Request) {
 func (app *application) notImplemented(w http.ResponseWriter, r *http.Request) {
 	views.ComingSoon("Coming Soon", app.newCommonData(r)).Render(r.Context(), w)
 }
+
+func ping(w http.ResponseWriter, r *http.Request) {
+	w.Write([]byte("OK"))
+}
diff --git a/cmd/web/handlers_guestbook_test.go b/cmd/web/handlers_guestbook_test.go
new file mode 100644
index 0000000..5ee8aeb
--- /dev/null
+++ b/cmd/web/handlers_guestbook_test.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+	"net/http"
+	"testing"
+
+	"git.32bit.cafe/32bitcafe/guestbook/internal/assert"
+)
+
+func TestPing(t *testing.T) {
+	app := newTestApplication(t)
+	ts := newTestServer(t, app.routes())
+	defer ts.Close()
+
+	code, _, body := ts.get(t, "/ping")
+
+	assert.Equal(t, code, http.StatusOK)
+	assert.Equal(t, body, "OK")
+}
diff --git a/cmd/web/routes.go b/cmd/web/routes.go
index c2fe48a..31d0d41 100644
--- a/cmd/web/routes.go
+++ b/cmd/web/routes.go
@@ -11,6 +11,8 @@ func (app *application) routes() http.Handler {
 	mux := http.NewServeMux()
 	mux.Handle("GET /static/", http.FileServerFS(ui.Files))
 
+	mux.HandleFunc("GET /ping", ping)
+
 	dynamic := alice.New(app.sessionManager.LoadAndSave, noSurf, app.authenticate)
 	standard := alice.New(app.recoverPanic, app.logRequest, commonHeaders)
 
diff --git a/cmd/web/testutils_test.go b/cmd/web/testutils_test.go
new file mode 100644
index 0000000..ca542a6
--- /dev/null
+++ b/cmd/web/testutils_test.go
@@ -0,0 +1,50 @@
+package main
+
+import (
+	"bytes"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/http/cookiejar"
+	"net/http/httptest"
+	"testing"
+)
+
+func newTestApplication(t *testing.T) *application {
+	return &application{
+		logger: slog.New(slog.NewTextHandler(io.Discard, nil)),
+	}
+}
+
+type testServer struct {
+	*httptest.Server
+}
+
+func newTestServer(t *testing.T, h http.Handler) *testServer {
+	ts := httptest.NewTLSServer(h)
+	jar, err := cookiejar.New(nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	ts.Client().Jar = jar
+	ts.Client().CheckRedirect = func(req *http.Request, via []*http.Request) error {
+		return http.ErrUseLastResponse
+	}
+	return &testServer{ts}
+}
+
+func (ts *testServer) get(t *testing.T, urlPath string) (int, http.Header, string) {
+	rs, err := ts.Client().Get(ts.URL + urlPath)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	defer rs.Body.Close()
+	body, err := io.ReadAll(rs.Body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	body = bytes.TrimSpace(body)
+
+	return rs.StatusCode, rs.Header, string(body)
+}